抄録
A cyclic fatigue testing device by using a piezo-electric bimorph actuator has been investigated to evaluate cyclic fatigue phenomena of fine ceramics under cyclic loading at high frequencies. The bimorph was constructed as a cantilever. A large deflection induced by input voltage at the resonant frequency is applied as a stress amplitude to a ceramic testpiece placed on the fixture of a three point bending apparatus. This device has the following features.
(1) Frequency could be changed between 100 and 580Hz by changing a frequency adjusting weight.
(2) Stress amplitude could be changed 0 to 65kgf by controlling input voltage.
